The Battery Doctor 20090 is a 12-volt battery isolator designed to enhance the performance and longevity of your vehicle's battery system. Suitable for marine use, this isolator features advanced smart technology that monitors and keeps your auxiliary battery charged efficiently.

Its compact and water-resistant design (IP62 rating) ensures durability in challenging environments, while offering priority charging for the starting battery. This product is equipped with overcurrent and surge protection, making it ideal for vehicles with sensitive electronic systems.